Yes, 1.4.2 has a bug in loadbalance and the npernode options. These are
corrected in an upcoming 1.4.3 release.
Meantime, you can download a pre-release (but good) snapshot from the OMPI site:
http://www.open-mpi.org/nightly/v1.4/
On Jul 16, 2010, at 5:12 PM, Qiyang Hu wrote:
> Hello, everyon
Hello, everyone,
We got some "Segmentation fault" errors in running "mpiexec" with
"-loadbalance" option (details see below). However, we don't have any
problem in using "-bynode" or "-nolocal". We tried in both Intel
compiler and GCC 4.1.2. The same type of error appears.
Here is the error
(Sorry for the late reply)
On Jun 7, 2010, at 4:48 AM, Nguyen Kim Son wrote:
> Hello,
>
> I'n trying to get functions like orte-checkpoint, orte-restart,... works but
> there are some errors that I don't have any clue about.
>
> Blcr (0.8.2) works fine apparently and I have installed openmpi
Open MPI can restart multi-threaded applications on any number of nodes (I do
this routinely in testing).
If you are still experiencing this problem (sorry for the late reply), can you
send me the MCA parameters that you are using, command line, and a backtrace
from the corefile generated by th
On Jun 14, 2010, at 5:26 AM, Nguyen Toan wrote:
> Hi all,
> I have a MPI program as follows:
> ---
> int main(){
>MPI_Init();
>..
>for (i=0; i<1; i++) {
> my_atomic_func();
>}
>...
>MPI_Finalize();
>return 0;
> }
>
>
The amount of checkpoint overhead is application and system configuration
specific. So it is impossible to give you a good answer to how much checkpoint
overhead to expect for your application and system setup.
BLCR is only used to capture the single process image. The coordination of the
distr
Eugene Loh wrote:
> Anton Shterenlikht wrote:
>
>> Will this bit of code work:
>>
>> if (rank .eq. ) then
>>
>> *change var*
>>
>> call MPI_Bcast(var, 1, MPI_INTEGER, rank, &
>> MPI_COMM_WORLD, errstat)
>> end if
>>
>> call MPI_Barrier(MPI_COMM_WORLD, errs
Anton Shterenlikht wrote:
Will this bit of code work:
if (rank .eq. ) then
*change var*
call MPI_Bcast(var, 1, MPI_INTEGER, rank, &
MPI_COMM_WORLD, errstat)
end if
call MPI_Barrier(MPI_COMM_WORLD, errstat)
I'm u
Will this bit of code work:
if (rank .eq. ) then
*change var*
call MPI_Bcast(var, 1, MPI_INTEGER, rank, &
MPI_COMM_WORLD, errstat)
end if
call MPI_Barrier(MPI_COMM_WORLD, errstat)
I'm using a int variable on all pr
Hi Edgar,
The only difference I could observed was that the segmentation fault appeared
sometimes later during the parallel computation.
I'm running out of idea here. I wish I could use the "--mca coll tuned" with
"--mca self,sm,tcp" so that I could check that the issue is not somehow limited
Jeff,
An update of what I did. Apparently, one of my lab mates installed another
version of OpenMPI manually and it clashed with the OpenMPI I installed from
the Ubuntu repository. I manually identified the files installed and deleted
them. After I installed OpenMPI from Ubuntu repository, my "mpi
Jeff,
Thanks for the suggestion. Been looking into it and although, I installed
the same OpenMPI version. But somehow, another software (Discovery Studio)
was installed on birg-desktop-10, causing the mpirun to be messed up (since
Discovery Studio also install some kind of mpirun/mpiexec). I type
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